Optical system of a solar telescope

Abstract

The invention belongs to the optical precision test technology field and particularly relates to an optical system for a solar telescope. The system comprises a main mirror, a heat diaphragm, a field diaphragm, a collimation lens, a reception lens and an image plane. The system is characterized in that the field diaphragm is an arc-shaped structure, the surface of the field diaphragm facing the incidence light is coated with a reflection film, and a problem that failure of high-resolution task observation caused by influence of stray light flooding on field signals because of great heat accumulated on the field diaphragm is solved.

Description

technical field

[0001] The invention belongs to the technical field of precision optical testing, and in particular relates to an optical system of a solar telescope. technical background

[0002] The effective field of view of the solar telescope for high-resolution observation of the sun generally does not exceed 5', and the light radiation in the solar area outside the effective field of view will enter the solar telescope lens barrel through the entrance of the telescope lens barrel, and this part of the energy is also in the telescope Internally transmitted and imaged, absorbed and scattered, it is both a strong heat source and a strong stray light source. For ordinary space telescopes and ground-based telescopes, the sun is also a heat source and stray light source, but the sun is not allowed to enter the telescope tube directly during mission observation, and measures such as hoods are generally used to suppress it.

[0003] Since the solar telescope images the effec...

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